Tire tread



FIG. 1 is a perspective view of a tire tread showing our new design, it being understood that the pattern is repeated throughout the circumference thereof;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a side elevation view thereof; and,

FIG. 4 is an enlarged fragmentary front view thereof.

The broken line showing of the tire sidewall in FIGS. 1,2 and 3 of the drawing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a tire tread, as shown and described. 